Runners, you can go crazy with RaRe Calc!

With the Race to Race feature you can compare your latest PR you've run to your PR's in other distances. What distance are you the best at? Figure out which result was truly the best.

The VO₂ Max feature allows you to predict what you should be able to run in any distance. All you need is a number.

With the Heat feature you can adjust your latest result based on how warm it was. You can figure out what your latest effort was really worth. And you don't have to stop there: you can figure out how fast you should be running during your workouts and your easy runs when it is hot.

RaRe Calc allows you to calculate, compare, and predict your race results. All for FREE!